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My router Dlink DSL 2640t is giving me headaches. I can't get past 11 megabytes per second through wired LAN transfers. I've tried with different cables and network adapter settings with no results.

This datasheet shows wireless transfer numbers, but I don't know which data might correspond to wired data transfer.

Please enlight me.

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up vote 5 down vote accepted

The bandwidth specs on your router's spec sheet are in Megabits Per Second. One byte contains eight bits. To calculate the number of Megabytes Per Second, the unit of measure you are reporting, simply divide the Megabits Per Second spec by 8.

Your router only has 100Mbps ports. 100Mbps is roughly 12.5MB/s. 11MB/s of throughput (what you are getting) is very normal; 12.5MB/s cannot be reached due to overhead and other factors.

To get around this without purchasing a new router, you simply need a gigabit switch (~125Mb/s theoretical bandwidth). Plug the switch into one of the router's LAN ports and then connect your devices into the switch instead of the router.

Example of a gigabit switch:

Note that Gigabit switches are also commonly labled as 10/100/1000 switches and/or 1Gpbs switches.

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Are there wireless access points or wireless switches that can transfer at least 30 Mb/s locally and still work with my current router? – Gabriel Mar 23 '13 at 2:30
Wireless bandwidth is generally horrible. 30 Megabytes per second is pretty ambitious. I would look into getting an Ethernet cable run instead of relying on wireless. – Rain Mar 23 '13 at 5:36
Some of the very latest equipment that supports the 802.11ac standard will be able to support a much higher speed than the current router, however it would be expensive to replace the wireless access point, and all the devices connecting to it. You would be better using the solution above of adding a Gigabit switch to the network to connect the devices together. – Shaun McDonald Jul 18 '13 at 11:37

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